EWE: Type Material
 
Database of Zeolite Structures
 

Framework Type EWE
Reference Material
  Material Name: EMM-28 calcined    
 
Chemical Formula:		  
[Al0.56Si223.44O448]-EWE
   
Unit Cell: 		 
orthorhombic
 F m m m (# 69)
    a' = 13.7805 Å b' = 22.4240 Å c' = 40.1010 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
   
Framework Density: 		 
18.1 T/1000 Å3
 
  
Channels: 		 
[100] 10 4.8 x 5.3
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 1-dimensional
   
References:
  Cichocka, M. O., Burton, A. W., Afeworki, M., Mabon, R., Schmitt, K. D., Strohmaier, K. G., Vroman, H. B., Marella, M. A., Weston, S. C., Zou, X. and Willhammar, T.
  "Aluminosilicate Zeolite EMM-28 Containing Supercavities Determined by Continuous Rotation Electron Diffraction"
Inorg. Chem. , 61, 11103−11109 (2022)
 
  
Name and Code derivation:
    Exxon Mobil Material - twenty eight
  EMM-28 (Two eight)
  EWE
Limiting Rings
 
10-ring along [100]*


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